Lexmark C720 User's Guide - Page 137

Print quality problems (continued) Problem The page is blank or one of the colors is missing. Action Replace the toner cartridge that matches the missing color on the page. See Replacing toner cartridges. Toner smears or rubs off the page. Make sure you're using recommended paper or other media. Make sure you have selected the correct Paper Type setting for the media you're using. Make sure the rear door is completely closed. Toner adheres to the back of the Make sure the paper size is set properly for the paper length you are printing page. on. Print several pages to clean the transfer roller of excess toner. You may need to replace the fuser. See Fuser and air filter for more information. Printed materials delivered by the postal service arrive with ghosting or mirror images of the text visible on the page. When preparing printed materials for mailing: • Use 24 lb (90 g/m2) paper. • Avoid rough paper; select paper with a smoothness from 100 to 150 Sheffield points. • Fold sheets with the text facing outward. • Meter envelopes or use precanceled stamps. • Place envelopes in trays and deliver to the post office; do not drop envelopes into mail boxes or chutes. Quality of printed transparencies Make sure you're using the recommended Lexmark transparencies. See is inadequate. Transparencies for more information. When printing transparencies, always set Paper Type to Transparency. Avoid getting fingerprints on transparencies before printing. 137